a classic example going back to 2007, john mccain talking about osama bin laden. i wa to play that. >> another painful one. >> on the subject of osama bin laden, he is responsible for the deaths of thousands of innocent americans, he is now orchestrating other attacks on the united states of america, we will do whatever is necessary, we will track him down, we will capture, bring him to justice and i'll follow him to the gates of hell. >> okay. >> oh, gosh. >> that was like a smile. >> yes. so that's -- you know, sort of nonverbal asin cronie. between either the content of what the person is saying and the nonverbals are saying or asynchronies between the nonverbals. when you are saying you are following someone to the gates of hell, you shouldn't be smiling. ewers don't know why, but it makes them feel bad. it is very adversive to see that kind of thing. >> there are reports that romney's team is preparing what are called zingers for tomorrow night's debate. when a candidate has been stung by one, it can be very effective. the exchange between ronald reagan and w